GB1451658A - Equipment for controlling the flow of liquids - Google Patents

Equipment for controlling the flow of liquids

Info

Publication number
GB1451658A
GB1451658A GB5753273A GB5753273A GB1451658A GB 1451658 A GB1451658 A GB 1451658A GB 5753273 A GB5753273 A GB 5753273A GB 5753273 A GB5753273 A GB 5753273A GB 1451658 A GB1451658 A GB 1451658A
Authority
GB
United Kingdom
Prior art keywords
drops
flow
per unit
unit time
drop
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5753273A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SIC SOC IND E DI CONSULENZA SR
Original Assignee
SIC SOC IND E DI CONSULENZA SR
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SIC SOC IND E DI CONSULENZA SR filed Critical SIC SOC IND E DI CONSULENZA SR
Publication of GB1451658A publication Critical patent/GB1451658A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
    • G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
    • G05D7/0676—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on flow sources
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16886—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body for measuring fluid flow rate, i.e. flowmeters
    • A61M5/1689—Drip counters

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Vascular Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Measuring Volume Flow (AREA)

Abstract

1451658 Automatic control of liquid flow SIC SOC INDUSTRIALE E DI CONSULENZA Srl 12 Dec 1973 [13 Dec 1972] 57532/73 Heading G3N Flow-rate of a liquid is controlled in respect of drops per unit time by a digital system in which the drops are detected by the interruption of electromagnetic radiation (preferably infrared) to operate a flow interrupter. In the complete system an arrangement of clockpulses and counters operates as a timer which is settable in terms of either drops per unit time or volume per unit time (using an adjustable drops per unit volume factor). When this times out a bi-stable circuit opens a valve or starts a pump 5, the bi-stable being reset and the flow thereby interrupted when a prescribed number of drops (e.g. one) have been detected at 8, and the timer is restarted to repeat the sequence. A counter may be set to indicate and/or shut off the system when a prescribed total number of drops have passed, and further counters interconnect the clockpulses and drop detector to sound an alarm and/or shut off the system if two or no drop signals occur between two clocked "turn-on" signals. As shown, turn-on of 5 relieves pressure in the vessel 1 to allow a drop 2 to fall but the controller 5 may be in the supply line to the dropper.
GB5753273A 1972-12-13 1973-12-12 Equipment for controlling the flow of liquids Expired GB1451658A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT7090772A IT976031B (en) 1972-12-13 1972-12-13 EQUIPMENT FOR PROGRAMMING AND CONTROL OF THE FLOW OF LIQUIDS BY COUNTING THE DROPS

Publications (1)

Publication Number Publication Date
GB1451658A true GB1451658A (en) 1976-10-06

Family

ID=11314476

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5753273A Expired GB1451658A (en) 1972-12-13 1973-12-12 Equipment for controlling the flow of liquids

Country Status (4)

Country Link
CH (1) CH566588A5 (en)
DE (1) DE2361580A1 (en)
GB (1) GB1451658A (en)
IT (1) IT976031B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9199036B2 (en) 2013-02-25 2015-12-01 Shift Labs, Inc. Device, method, and system for monitoring the delivery of fluids through a drip chamber
US11464905B2 (en) 2013-02-25 2022-10-11 Shift Labs, Inc. Monitoring device including an emitter emitting electromagnetic radiation and a detector positioned to receive the radiation to determine one or more rolling average flow rates

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4339811C2 (en) * 1993-11-23 1996-07-18 Fresenius Ag Dosing device for volumetric dosing of a liquid additive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9199036B2 (en) 2013-02-25 2015-12-01 Shift Labs, Inc. Device, method, and system for monitoring the delivery of fluids through a drip chamber
US11464905B2 (en) 2013-02-25 2022-10-11 Shift Labs, Inc. Monitoring device including an emitter emitting electromagnetic radiation and a detector positioned to receive the radiation to determine one or more rolling average flow rates

Also Published As

Publication number Publication date
CH566588A5 (en) 1975-09-15
DE2361580A1 (en) 1974-06-20
IT976031B (en) 1974-08-20

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee